HEAT SENSITIVE DETECTOR

• US 3,754,201 A
• Filed: 02/03/1972
• Issued: 08/21/1973
• Est. Priority Date: 02/24/1967
• Status: Expired due to Term

• Current Assignee: Robert B. Adams
• Original Assignee: Robert B. Adams
• Inventors: Adams, Robert B.
• Primary Examiner(s): Albritton, C. L.
• Application Number:
  US05/223,601
• Time in Patent Office: 565 Days
• Field of Search: 338/22,28,229 73/362AR
• US Class Current: 338/28
• CPC Class Codes: G01F 1/684 Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
• CPC Class Codes: G01K 13/02 for measuring temperature of moving fluids or granular materials capable of flow
• CPC Class Codes: G01P 15/12 by alteration of electrical resistance G01P15/0897, G01P15/105 take precedence
• CPC Class Codes: G01P 5/12 using variation of resistance of a heated conductor
• CPC Class Codes: H01C 7/04 having negative temperature coefficient thermometers using resistive elements G01K7/16

Abstract

A heat sensitive detector is disclosed which includes an electrically conductive body providing a probe with a thin wall metallic end closure having a thermistor held thereagainst at the center of the closure, the body if desired having a compensating thermistor therein for temperature variation compensation.

Claims

1. In measuring apparatus for measuring a condition in a fluid, a metallic body having an opening at one end, a thin walled metallic closure for said opening having an outer face exposed to the fluid, and a temperature sensitive electrical element engaged within the inner face of said closure, said temperature sensitive element being held in engagement with said inner face by an electrical and heat conductive adhesive cement.

2. In measuring apparatus for measuring a condition in a fluid, a metallic body having an opening at one end, a thin walled resilient metallic closure disc for said opening having an outer face exposed to the fluid, and a temperature sensitive electrical element engaged with the inner face of said closure, said disc providing a resilient force for maintaining contact between said disc and said element.

3. In measuring apparatus for measuring a condition in a fluid, a metallic body having an opening at one end, a thin walled metallic closure for said opening having an outer face exposed to the fluid, and a temperature sensitive electrical element engaged with the inner face of said closure, said closure having a thermal insulating coating on the outer face provided with a window facing said element for heat transfer through the window between the fluid and said element.